Hinge



A. S. HEDSTRONI.

HINGE.

APPLICATION FILED SEPT-26| 192|.

Patented May 30, 1922.-.

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. NETE@ STTE@ ALBERT S. HEDSTROM, OF OAK PARK, ILLINOIS.

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T o all whom t may concern:

Be it known that I, ALBERT S. HEDs'rRoM, a citizen of the United States, residing at Oak Park, in 'the county of Cook and State of Illinois, have invented certain new an useful lmprovements in Hinges, of which the following is a specification. n

My invention relates to hinges and it has for its principal object the provision of a new and improved form and arrangement of parts by reason of which the hinge shall be completely hidden from view when the door upon which it is mounted is closed. .It is another object of my invention to provide an improved arrangement of means for preventing interference between-the corners of the door and the adjacent jamb when .the door is in the process of opening or closing. 1t is still another object of my invention to improve devices of this type in sundry details hereinafter pointed out. The preferred means by4 which l have'accomplished my several objects are illustrated in the drawing and lare hereinafter specifically described. r1`hat which l believe to 'be new and desire to secure by Letters Patentisl set forth in the claims.

ln the drawing;- y

Fig. l is a face view of one of my improved hinges in position for supporting a door; and

Fig. 2 is a horizontal. sectional view taken line 2-2 of Fig. 1,l said Fig. 2 a lso showing in dotted 'lines a changed position of the door.

Referring to the several figures' of the which corresponding parts are indicated by the same reference characters, 10 indicates a door jamb or other frame part upon which a door 11 is to be swingingly mounted by the'use of my improved hinge. As is best shown in Fig. 2, my hinge comprises an intermediate memberk 12 in the form of a channel, with supporting leaves or members 13 and 14 pivotally mounted thereon by Vmeans of pins'land 162 respectively, the supporting members being mounted uponethe ends of the.: arms of the intermediate channel member' 12. As is clearly shown in said Fig. 2, the supporting members '13 and 14 are connected to the jamb and the door, respectively, by means of Iscrews upon the inner faces of mortises or recesses 17 cut in the edge of the door 11 and the edge or facevqof the )amb 10. By this construction, asis .illustrated by the dotted Specication of Letters Patent.

. Application filed September 26, 1921.

'members 12 and 14, as

Serial No. 503,127.

line position of the door 11 in Fig. 2, the hinge parts are completely hidden from view within the recessesV 17 when the door is closed.

As is indicated by the dotted line struck as an arc about the center of the-pivot pin 15 through the corner of the jamb 10, the arrangement and proportions of the hinge parts are such that clearance is just barely provided between the door and the corner of the jamb when the door is started on its swinging movement about the pivot pin 15 from the position shown in dotted lines in said Fig. 2. In the same way, the dotted line struck as an arc about the center of the pivot pin 16 in its dotted line position in said Fig. 2 shows that clearance is just barely provided between the corner A,of the door 11 and the face of the jamb 10 when'the door is started on its opening movement by turning upon the pivot pin 16. It will thus be clear that if the intermediate member 12 at the start of the opening movement of the door swings at thesame time about the pins 15 and `16, the corner of the jamb and the corner of the door will interfere so as to prevent a smooth opening movement. In order to prevent this objectionable operation, 1 have provided yielding means tending at all times to cause a movement of one of the supporting members with respect to the intermediate channel member 12,-in the construction shown such yielding means having a tendency to move the supporting member 14C in the direction for opening the door. By the provision of this expedient, providing a differential tendency for swinging upon the pivot pins 15 and 16, I have provided that upon the opening movement the door will first have its swinging movement about the pivot pin 16 and then about the pivot pin 15.

In the closing operation, in the same way and for the same reason the first swinging movement will be about the pin 15 followed by the swinging movement about the pin 16. The arrangement of the parts is such that the opening and closing movements are perfectly free and easy without any objectionable catching or 'erking. I have accomplished this result by theA use of a coiled spring 18 having a considerable number of coils about the pivot pin 16, and having its ends in engagement with-the faces of the is clearly shown in the drawing. This spring 18 has a tendency to hold the door 11 in its opened position,

Patented May 30, 11922.v

but this tendency is very slight in yiew ofv the fact that a comparatively weak spring is effective for producing the desired differential action. It will be understood that if desired, the spring could be arranged to have a slight tendency to cause a closing movement of the door, rather than to cause an opening movement, and l do not wish to be restricted to the particular arrangement shown except as specifically claimed.

Where I have referred -to the swinging of the supporting member 13 with respect to the channel member 12, it will be understood that l mean the relative swinging movement, inasmuch as the member 13 is really stationary upon the jamb 10.

Y claim:

1. A hinge comprising an intermediate member in the form of a channel, a supporting member pivotally connected with Ithe ends of the arms of the channel, and yielding means tending to cause one of said supporting members to swing in one direction upon its pivot and tending to hinder the swinging of said supporting member on its pivot in the opposite direction.

2. A hinge comprising an intermediate member the form of a channel, supporting members pivotally connected with the ends of the arms of the channel and adapted to swing in opposite directions upon either the' opening or the closing operation, and a spring bearing on one of said supporting members and the intermediate channel member tending constantly toproduce a preponderance of force for swinging one of said supporting members upon a closing or opening operation as compared with the force tending to swing the other supporting member upon the same operation.

3. A hinge comprising an intermediate member in the form of a channel, supporting members pivotally connected with 'the ends of the arms of' the channel, and a coiled spring having a plurality of turns about the pivot pin upon which one of said supporting members is mounted on said intermediate channel member, said spring having a bearing on both of said members for producing a tendency for the supportingl member to stand at one of the limitsy of its motion with respect to the channel member.

4. The combination of an intermediate hinge member in the form of a channel, a supporting member secured to the edge of the. door in a recess therein and pivotally connected with one arm of said channel member, a second supporting member secured to the jamb in a recess therein and pivotally connected with the other arm of said chan nel member, and a coiled spring about theA pivot pin of one of said supporting members tending to move said supporting member in the direction for openingthe door before the movement of the other supporting member about its pivot pm.

ALBERT S. HEDSTRM. 

